Leather working machinery



May 31, 1932. s, JONES 1,860,713

" LEATHER WORKING MACHINERY Filed May 27, 1922 4 Shets-Sheet 1 [/7 Ver)t of, F rank 5. Jones.

2; M4Qzzz May 31, 1932. F. s. JONES 1,860,713

LEATHER WORKING MACHINERY Filed May 27. 1922 4 Sheets-Sheet 2 7 1n wenton Frank .5 Jones.

May 31, I932. F s. JONES 4 1,350,713

LEATHER WORKING MACHINERY Filed May 27. 1922 4 Sheets-Sheet 5 I [/7Vendor, Frank 5. Jones.

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II II May 31, 1932. F. s. JONES LEATHER WORKING MACHINERY 4 2 t an n w zy w a w w W M an 4. m 4 ,0 F w a f 5% Filed M'ay 2'7, 1922 in UnitedStates Letters Patent No. 78%,017, granted Feb. 28, 1905,.upnapplication of.

Patented May 31, 1932 unirsn stares PATENT OFFH'CE FRANK S. JONES, 0FLYNN, MASSACHUSETTS, A SSIGNQR T0 TURNER TANNING MACHINERY COMPANY, OFPORTLAND, MAINE, A COB?OEATION OF IlTAINE LEATHER 'wonxlns MACHINERYApplication filed May 27, 1922. Serial No. 564,171.

This invention relates to machines for .op-

that the invention and various important features thereof may have otherapplications and uses. 7

In unhairing machines of the type disclosed N. B. Turner, a number ofwork supports are employed in presentingpieces of work for unhairing toa plurality of sets of bladed piece of work is returned to its initialposition so that the operator can remove it from its tableand substitutea freshpiece of work therefor. It is to be noted that this machine isoperative completely to unhaira hideor skin in one passage through themachine. However, the machine is expensive to build and to maintain inproper operating condition. It is clear, therefore, that for manytanneries a smaller and lessexpensive machine would be more desirable.

Accordingly, it is an object of the invention to provide a simple andinexpensive machine of the drum or roll type for treating hides, skins,and other pieces of work and completing the treatment of the whole pieceof work at one operation in an effective manner, the piece of workbeing" returned to the operator without any necessity on his part ofexercising control of the machine to secure such return of the work.

To these ends, and in accordance with an important feature of theinvention, means is provided in the illustrated construction for holdinga piece of work. against the cylindrical surface of a rotary drum whileother} means is operating on the entire surfaceof the work not 1ncontact wlth the drum while the latter, in its rotation, carries theWork cylinders, and following the operation the of the treatingtoolswhichoperate continuously upon thework as the latter is presented by thecontinuously rotating drum. 7

Preferably and" as shown, the, supporting orholdin belts are arranged insets, the belts ofone setfigeing arranged in side-by-side overlappingrelation to the belts of another set,

thus leaving spaces between the belts. of each set in which thetreating. tools mayoperate. In order that all portions of the surface ofthe work not in contact with the drum may be op erated upon in spite ofthe fact that the supporting belts are disposed in spaced relationtoeach other over the surface to be treated, a

plurality of bladed cylinders are employed with the blades of onecylinder in staggered relation'to the blades of another cylinder, sothat the blades of one cylinder operate in spaces between one set ofbelts while the blades of theother cylinder operate in spaces betweenanother set; of belts in staggered relation to the first-mentioned setof belts.

In order to maintain the-belts at proper tension while at the same timeaccommodatmounted so asto press the belts yieldins lv against thesurface of the drum. To assist in guiding the pieces of work in theirtravel around the drum, guide members may be employed positioned inpredetermined spaced relation to the surface of the drum, another guidemember being provided near the front of the machine and in predeterminedrelation I to the drum to serve as a stripper by which I the worki'sremoved from the drum and de and novel combinations of parts will now bed-escribe'd'in detail with reference to the accompanying drawings andthen pointed e: I

more particularly in the appended claims.

i In the drawings Figure 1 is a side elevation of the machine showingthe driving mechanism.

Figure 2 is a front elevation of the same.

Figure 3 is a plan View.

Figure 4 is a transverse section showing the 7 operating mechanism;

Figure 5 1s a rear elevation.

Figures 6 and 7 are detail views showing the movable bearings.

Figures 8 and 9 are detail views of the adjustable rigid bearings.

Figures 10, 11, and 12, are diagrammatic views of the feeding beltsdisclosed in Fig. 4. Figure 13 is an alternative construction showing asingle blade. Referring to the drawings, 10 and 11 indicate side framesof the machine which are.

held rigidly together as a unit by rods 12, 13, 14, and 15. held betweentwo adjustable clamping nuts threaded on rods 12, 13, 14, and 15 foradjusting the frame to the supported members. Mounted in the side frames10 and 11, is a main driving shaft 16 which rotates in rigid bearings17, Figure 3. Fixed upon'shaft 16 V is a master drum18, around which thevarious operations of the machine take place. The periphery of the drum18 is covered with a rubber matting 19, although any suitable materialmay be utilized which is flexible in its nature for aworking and anoperating surface. The shaft 16 is provided with tightand loose pulleys20 and 21 although it may receive its power from any suitable source.Mounted on the shaft 16 and rotating with it is a driving gear 22 whichmeshes with driven cap is a boss 31 in which is threaded an adjustablebolt 32. The bolt 32 is free to turn in a loose connection 33 whichallows the turning movement of the bolt 32 toimpart radial movement ofthe box bearing 27 in relation tothe drum 18. There are two sets ofthese bearings in eachside frame 10 and, 11 respectively. Mounted on theshaft 25 are blade cylinders 34, 35, 36, 37, 38, and 39, hav ing aconsiderable clearance space between them for facilitating'the operationof the machine, the description of which will be taken up hereinafter.Mounted on the shaft 26 are blade cylinders 40, 41, 42, 43, and 44' inline and overlapping the spaces between the cylinder blades 34, 35, 36,37, 38, and 39 The side frames 10 and 11 are eration may be provided.The skin or hide V A may be fed over a table 45, although the table isnot absolutely necessary. The. skin' or hide passes between the masterdrum 18 and a first set of feed rolls 46 and 47 (shown in Figure 4) andidling roll 48, the latter compensating for the flexibility of thebelts. Mounted on the rolls 46, 47, and 48 are belts 49, 50, 51, 52, and53 (Figs. 3, 4 and 11). Operating between these belts is an intermediateset ofbelts 54, 55, 56, 57, 58, and 59 v(Figs. 3, 4. and 10) whichpractically feed the skin or hide half way around the drum and aremounted on the first mentioned rolls 46 and 48, and extend across andunder the drum 18 to the roll 60 which completes half of the feedingoperation. I

The belts 49 to 53, inclusive, Figure 3, be-

ing laterally located between the belts 54 to 59, inclusive, Figure3,allow the whole skin or hide-to be fed in-and straightened out as itpasses underthe drum 18 to the lower cutting blades mounted on. theblade cylinder to 44, inclusive. The hide then passes upwardly under theblades on the blade cylinder 34 to 39, inclusive, it being the latterhalf of the feeding operation. As the hide or skin 7 leaves thejroll 60,it passes to a thirdset of belts 61, 62, 63, 64, and 65. mounted on therolls 60, 66, and 67, (Figs. 3,

These belts 4 and 12) complete the feeding operation. The feed rolls ordrums 46, 47, and 66 have grooves in which the (Re-operating belts arereceived, the grooves beingof the width of the belts to be receivedtherein. and of a depth to correspond closely to the thickness of thebelts. Hence the annular portions of the rolls 46, 47, 60 and 66 betweenthe belts 4 will also engage the hide or skin on themaster drum 18 andassist in the feedinglthereof. It is to be noted also that roll 47 ismore deeply grooved at regular intervals to permit passage of belts 54,55, 56, 57, 58 and 59 in straight line runs between rolls 48 and 60, asindicated in Fig. 4 in connection with belt 59. From an inspection ofthis latter figure of the drawings it will appear that feed roll 46 hasthe function of a startingfeed roll andmay before, are mounted onadjustable bearings 27 to allow the blade to be regulated in properrelation to the skin or hide resting on the drum. It is well known thathides or skins are of varying thickness so that it becomes necessary toadjust the blades to suit the cutting of flesh or the removing of hair,and it is by this adjustment that the blade can be regulated to suit theconditions required, and at the same time remain rigid under the cuttingoperation.

The large rolls 46, 60, 47, and 66, are provided with bearings which aremovable and spring pressed so as to force the said rolls firmly butyieldingly against the master drum 18. The bearing consists of a box 67(Fig. 6) which is free to slide radially in the guides 68 and 69. Theguides 68 and 69 are provided with a cap 70 in which the bolt 71 isthreaded. to the loose connection 72, which allows the bolt- 71 to turnand impart a radial movement to the box 6'7. 'Located between the cap 70 and the head of the bolt 71 is a spring 7 3. By increasing ordecreasing the tension on the spring 73, the rolls 46, 47 60 and 66 willadapt themselves to the varying thickness of hides or skins in theirpath around the drum during the flashing or unhairing operation.

The smaller rolls 48 and 67 are tension devices for retaining the beltsin position and taking up the slack caused by the skins passing betweenthe master drum 18 and the rolls 46, 4'7, 60, and 66. They alsocompensate for the stretching of the belts and at all times render thebelts in proper condition for operation. The shafts supporting the rolls48 and 67 are mounted in box 79 (Fig. 9) which is supported in guides 74 and 7 5 formed integral with the side frames 10 and 11. Secured to theguides 74 and 75 is a cap 77 in which the bolt 78 is threaded. One endof the bolt 7 8 is secured rotatably in the boss formed on the box 79.Interadjacent to the head of the bolt 78 and cap 77 is a spring 80 whichpulls in the direction to continual- 67 serve as tighteners to retainthe said bolts 78 outwardly, and hence also as tighten-ers to retain thesaid belts in proper relation to the working operation.

Pivotally secured to the side frame is a guide 81 4) to prevent thehides or skins from being destroyed or from turning over due to themovement of the blades in their path over the drum. Thepivotal mountingallows the guide 81 to rock under the varying condition of the skin orhide and compensates for any varying condition which may arise.

Secured to the side frames 10 and 11 is a guide 87 (Fig. 4) set close tothe master drum 18, which causes the hide or skin to move away from therotating drum and drop off when the operation is completed.

Although we have shown the advantage of One end of the bolt is secured asystem of feeding hides or skins in connection with two sets of blades,it is to be understood that the system of feeding can be used with asingle set of blades as shown in modified view in Figure 13. The feedrollsany belts, and are used with guiding members 84 and 85. Theseguiding members pre vent the hide or skin from dropping down or wrappingaround the feeding cylinders as the said skin or hide passes around themaster drum in the fleshing or unhairing operation.

In operation, a raw hide. or skin A is placed on the table and fed overthe roll 46 between the two sets of belts 49 to 53 inclusive and54 to 59inclusive. As the skin or hide passes over the belts it is straightenedout and brought into a smooth and flat relation to the masterdrum 18 andthen it passes over the roll 47, immediately after which the firstcutting or unhairing operation takes place, and this is practicallyone-half of the'entire cutting or unhairing operation. After'this firstoperation, the skin or hide passes under the rolls and 66, during whichthe blades on the shaft 25 cut or clean the unfinished surfaces whichwere left by the preceding my invention; but I- desire to have it understood that the apparatus shown is only illustrative, and that variouschanges may be made within the scope of the appended claims.

What I claim as new and desire to secure by Letters Patent of the UnitedStates is:

1. In a leather working machine means for unhairing hides or skinscomprising a plurality of blades, a feed drum, means for continuouslyfeeding the hide or skin around the drum to the starting position duringthe unhairing operation, and means for operating the blades to effectunhairing operations upon every part of the hair-bearing surface of saidhides and skins. V

2. In a leather working machine, means for unhairing hides or skins, afeed drum, and feed belts co-operating with the drum for continuouslyfeeding the hide or skin around the drum to the starting position duringthe unhairing operation.

3. In a leather working machine for unhairing hides or skins, a feeddrum, feed belts co-operating with the drum for continuously feeding thehides or skins around the drum to the starting position, and knivesarranged to Work in proper relation to the feed belts for unhairing thehides or skins.

a. In a leather Working machine for unhairing hides or skins, a feeddrum, feed belts co-operating with the drum for continuously feeding thehides or skins around the drum to the starting position, knivesarrangedto vvork in proper relation to the feed belts for unhairing thehides or skins, and holding members for supporting the knives and moaable to cause the knives to operate on the hides or skins.

5. In leather working machine for unhairing hides or skins, a frame, amaster feet drum rotatable in the frame, bearings in the frame, feeddrums in the bearings, feed belts on the feed drums co-operating withthe mas- '20 ter drum for continuously feeding the hides or skins aroundthe master drum to the starting position, knives arranged to work inproper relation to the feed belts for imhairing the hides or skins, andmembers spaced from each other distances corresponding to Widths of thefeed belts'and movable. to cause the knives to operate on the hides orskins.

6. In a leather Working" machine for unhairing hides or skins, a frame,a master feed "drum rotatable in the frame, hearings in the frame, feeddrums in the bearings, feed belts on the feed drums co-operating Withthe master drum for continuously feeding the hides or skins, knivesarranged to WOlk in proper relation to the feed belts for unhairing thehides or skins, and means additional to the belts for guiding the saidhides or skins in their path around the master drum. 7. In a leatherWorking machine for un- "hairing hides or skins, a frame, a master feeddrum rotatable in the frame, bearings in the frame, feed drums in thebearings, feed belts on the feed drums co-operating With the master drumfor continuously feeding the hides or skins, knives arranged to Work inproper relation to the feed belt-s for unhairing the hides or skins, anda guide member secured to the frame and in proper relation to the feeddrums for guiding the said hides or 59 skins in their path around themaster drum.

8. In a leather Working machine for unhairing hides or skins, a frame, amaster feed drum rotatable in the frame, bearings in the frame, feeddrums in the bearings, feed belts on the feed drums co-operating Withthe master drum for continuously feeding the hides or skins, knivesarranged to Work in proper relation to the feed belts for unhairsing thehides or skins, and rotary members for supporting the knives and forcausing them to operate on the hide or skin.

9. In a leather Working machine for unhairing hides or skins, a frame, amaster feed m drum rotatable in the frame, bearings in the fa frame,feed drums in the bearings, feed belts on the feed drums co-operatingWith the master drums for continuously feeding the hides or skins,knives Working in proper relation to the feed belts for unhairing thehides or skins, and means for operating the knives in the spaces betweenthe feed belts.

10. In a leather Working machine for unhairing hides or skins, aframe, amaster feed drum rotatable in the frame, bearings in the frame, feeddrums in the bearings, feed belts on the feed drums co-operating Withthe master drum for continuously feeding the hides or skins, knivesWorking in proper relation to the feed belts for unhairing the hides orskins, cylinders spaced from each other distances corresponding towidths of the feed belts and serving as supports for the knives, andmeans for rotating the master drum and the knife cylinders. 7

11. In a leather Working machine for unhairing hides or skins, a frame,a master feed drum rotatable in the frame, bearings in the 7 frame, feeddrums in the bearings, feed belts on the feed drums co-operating withthe master drum for continuously feeding the hides or skins, knivesWorking in proper.

relation to the feed belts for unhairing the hides or skins, cylindersupon Which the knives are secured, a gear secured to the master drum,and a gear secured to the cylinders which hold the knives, for rotatingthe said master drum and the knives.

12. In a leather Working machine for unhairing hides or skins, a frame,a master feed drum rotatable in the frame, bearings in the frame, feeddrums in the bearings, feed belts on the feed drums co-operating Withthe master drum for continuously feeding the hides or skins, and knivesWorking in proper relation to the feed belts for, unhairingthe hides orskins, some of the feed drums having grooves for receiving said beltsand having annular portions spaced by said grooves for engaging With thehide or skin to press it against the master drum to assist in thefeeding of the hide or skin. I

13. In a leather Working machine for unhairing hides or skins, a frame,a master feed drum rotatable in the frame, bearings in the frame, feeddrums in the bearings, feed belts on the feed drums co-operating Withthe master drums for continuously feeding the hides or skins, and knivesWorking in-proper relation to the feed belts for unhairing the hides orskins, said feed drums having portions for engaging With the hide orskin to ferent s s of two of the th ee f ed ro ls for forming acontinual feed for the hides or skins, and me ns. un airing he h d s orskins.

15. In aileather wo k ng machin for unhairing hides or skins, a frame, amaster hairinghides or skins, a frame, a master drum rotatably mountedin the frame, a starting feed roll, an intermediate feed roll and "adelivery feed roll mounted in the frame, two sets of feed beltsextending par tially around the master drum and ITQISP-f G- tively fromthe starting and delivery roll to the intermediate roll which ispractically covered by the two sets of belts, and two sets of knives,one below and one above the intermediate roll for unhairing the hides orskins between the feed belts.

17. In a leather working machine for unhairing hides or skins, a frame,a master drum rotatably mounted in the frame, a starting feed roll, atension feed roll, an intermediate feed roll and a delivery feed rollmounted in the frame, two sets of feed belts extending partially aroundthe master drum and one set of feed belts extending from the startingfeed roll and the other set from the delivery feed roll both to theintermediate roll which is practically covered by the two sets of belts,two sets of knives, one below and one above the intermediate roll forunhairing the hides or skins between the feed belts and a set of feedbelts on the starting roll and acting against the master drum and alsoextending around the tension feed roll to keep the hide or skin smoothand even as it enters the ma chine.

18. In a leather working machine for unhairing hides or skins, a frame,a master drum rotatably mounted in the frame, a starting feed roll, anintermediate feed roll and a delivery feed roll mounted in the frame,two sets of feed belts extending partially around the master drum andone set of feed belts extending from the starting feed roll and theother set from the delivery feed roll both to the intermediate rollwhich is practically covered by the two sets of belts, two sets ofknives, one below and one above the intermediate roll for unhairing thehides or skins between the feed belts, and means for holding the beltstightly against the feed rolls and master drum.

19. In a leather working machine for unhairing hides or skins, a frame,a master belts extending from the starting feed roll and he o her s tfrom he del ve y fe d r011 b th t he n me iate r l h h p t oally co eredythetwo sets of b lts, an

wo s ts of knives fo unhair ng th h d or sk ns between the feed belts,the knives of one set being in staggered relation to the kn ves of theotherset to work in between the belts of the two sets. I

20. In a leather working machine, a master feed drum, feed beltsco-op'erating with the master drum for continuously feed-* ing a hideorskin around the master drum to the start ng positlon, and means workingin spaced relation to the feed belts forunha-iring the hide or skin. I IIn a leather working machine, a frame, means forunhairing hides orskins, a master feed drum rotatable in the frame, and means for feedinghides or skins under he mast d um a d for arry ng t hid or skins aroundthe master drum to the upardly fa ing ur ce o t r m to di ch ge t hideor ski s clien t the po nt o n a ce to h f i g mo ns,

a lea her W rki g ch n a fram a master feed drum rotatable on the frame,

f d r l o -s n the r ls a ange to k p hid r in p e sed ag i st hem t r eu nd kni e or op at ng agains t e h de'or skin a trav ls aro t m ster dum a conti us op ati n.

3.- .In a l a he worki g machin a fram a m t r drum o a-t bl inthe fr mea food elts ex ending a ound ma r dr i from th unders d t h upp r sidehe and means for un a i g' a h e r s i mp i ing kn ves Wo ing i the pa eetwee t f ed bel I 5h In a le he Work ng machine, a ra e,

llO

means f r uhha ring ides or skins, a dru a r ta a le n th frame, and aplurality f se s of ee be ts extending inover appi g e ation ar n h rumi25, In a eathe W king h ne, a fr me, a rum ro table in th am a pluralityof sets of feed belts extending'around the drum to hold 3 hide or skinthereon, and two sets of knives, one set arranged to work between thebelts of one set of belts and the other set of knives being, arrangedt,o' -wor k tween b l s o another set of be t 26. In a ma in for oper gonhi skins, leather and other similar pieces of work, a drum forsupporting a piece of work,

a plurality of sets of feed belts extending in 7 end to end overlappingrelation to hold a piece of work against the surface of the drum, nstrent i y f r operating on the Work while supported by the drum. 1

work, a drum for supporting a piece of work,

belts for holding the piece of work against i the surface of the drum,and means arranged to treat the entire surface-of the work facin awayfrom said drum while the piece 'of work is held on each side of thefield of treatment by said belts, said work treating means being locatedwith respect to the belts to treat said entire surface of the workwithout contacting with said belts.

28. In a machine for operatingon hides, skins, leather and other similarpieces of work, a drum for supporting a piece of work, means for holdingthe piece of work against the cylindrical surface of the drum, and meansarranged to treat the entire surface of the work facing away from saiddrum while the piece of work is held on each side of the field oftreatment by said holding means, said work treating means being locatedwith respect to the work holding means to treat said entire surface ofthe work without contacting with said work holding means. 29. In amachlne for operating on hides,

skins, leather, and other similar pieces of work, a work support, aplurallty of tools arranged ln sets, the tools 1n one set beingarmachine for operating on hides,

skins, leather and other similar pieces of work, a drum adapted tosupport a hide or skin, belts adapted to hold thehideor skin against thecylindrical surface of the drum 'and to expose the entire surface of thehide or skin in alternate strips, and meansto' remove the hair from theentire hair-bearing surface of the hide or skin without contacting withsaid belts.

33. In a machine for operating on hides,

skins, leather andother similar pieces of work, a cylindrical drumadapted tosupport a hide or skin during treatment thereof,

means adapted to hold the hide or skin on the 3 work supporting surfaceof the drum and to expose the entire surface of the hide or skin inalternate strips, while the drum is rotating, and means comprising aplurality of ranged in staggered relationto 'the tools of another set'tooperate upon the entire exposed surface of the piece of work, and feedbelts operating in the spaces between the tools and arranged to contactwith the piece of work to feed it past the sets of tools.

OpIn a machine for operating on hides,

I skins, leather and other similar pieces of Work, a drum adapted tos'up'port'a hide or skin, belts adapted to hold the hide or skin againstthe cylindrical surface of the drum and to expose the entire surface ofthe hide or skin in alternate strips, andm'eans comprising bladesarranged to treat the entire surface of the hide or skin facing awayfrom said drum while the hide or skin is held by said belts, the bladesbeing arranged with respect to the belts to treat said entire surface ofthe work, including portions between the belts,'without contacting withsaid belts.

31. In a machine for operating on hides, skins, leather and othersimilar pieces of work, means to treat hides or skins comprising aplurality of blades, a cylindrical drum adapted to support a hide orskin during treatment thereof, and means adapted to hold the hide orskin on the work supporting surface of the drum and to expose the entiresurface of the hide or skin in alternate strips,

while the drum is rotating to carry the hide 1 or skin past theplurality of blades for the operation of the latter on the hide or skin,said blades being arranged with respect to the holding means to treatone entire surface of the hide or skin without contacting with saidholding means. l

